local variable arrays and unit groups

local <something> array Name
Name[0] = something

scope FrostBolt

globals
    private constant integer AID_AREA_FROST_BOLT = 'A002'
    private constant integer AID_DUMMY_FROST_BOLT = 'A000'
endglobals

private function EnemyCondition takes nothing returns boolean
    return IsUnitAliveBJ(GetFilterUnit()) and IsUnitEnemy(GetFilterUnit(), GetOwningPlayer(GetTriggerUnit()))
endfunction

// must match AOE fields of AID_AREA_FROST_BOLT in object editor
private function AOE takes integer level returns real
    return 200.0 + 50.0 * level
endfunction

//===========================================================================
private function Actions takes nothing returns nothing
    local group g = NewGroup() // Recycler
    local location temp = GetSpellTargetLoc()
    local unit hero = GetTriggerUnit()
    
    local Caster_Data cdata = Caster_Data.create(hero)
    set cdata.height = GetUnitFlyHeight(hero)
    set cdata.abilityId = AID_DUMMY_FROST_BOLT
    set cdata.orderId = OID_thunderbolt
    set cdata.level = GetUnitAbilityLevel(hero, AID_AREA_FROST_BOLT)
    
    call GroupEnumUnitsInRange(g, GetLocationX(temp), GetLocationY(temp), AOE(cdata.level), Condition(function EnemyCondition))
    
    call cdata.castOnGroup(g, false)
    
    call cdata.destroy()
    call RemoveLocation(temp)
    call ReleaseGroup(g) // Recycler
    
    set g = null
    set hero = null
    set temp = null
endfunction

//===========================================================================
private function Conditions takes nothing returns boolean
    return GetSpellAbilityId() == AID_AREA_FROST_BOLT
endfunction

//===========================================================================
public function InitTrig takes nothing returns nothing
    local trigger trig = CreateTrigger()
    call TriggerRegisterAnyUnitEventBJ( trig, EVENT_PLAYER_UNIT_SPELL_EFFECT )
    call TriggerAddCondition( trig, Condition( function Conditions ) )
    call TriggerAddAction( trig, function Actions )
endfunction

endscope

    private function GroupFilter takes nothing returns boolean
        return IsUnitEnemy(GetFilterUnit(), GetOwningPlayer(GetTriggerUnit())
    endfunction

    globals
        private player filter_owner
    endglobals
    private function GroupFilter takes nothing returns boolean
        return IsUnitEnemy(GetFilterUnit(), filter_owner)
    endfunction

struct SomeData
    group g
endstruct

function ...
    local SomeData d = SomeData.create()
    local group g
 
    //Set up your group
    set d.g = g 
endfunction

private struct Data
    unit array Target[100]
    real array Distance[100]
    real array Angle[100]
    integer N // Number of units in arrays
endstruct

private struct Data
    unit target
    real distance
    real angle
endstruct

//...... make struct for every unit (in a ForGroup)
Data array dataz[100]

//...... and send every struct to TT
set i = N-1
loop
    exitwhen i<0   
    call TT_Start(function Handler, dataz<i>)
    set i = i - 1
endloop
</i>

//...... make struct for every unit (in a ForGroup)

set i = N-1